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Infection parameters of Heterorhabditis amazonensis (Nematoda: Heterorhabditidae) in different stages of Hibiscus pink mealybug

Journal of Nematology
Volume 52 (2020): Issue 1 (January 2020)
By:
Open Access
|Jul 2020

Figures & Tables

Figure 1:

Percentage of mortality of different stages of Maconellicoccus hirsutus according to different concentrations of Heterorhabditis amazonensis; dark gray bars = females; light gray bars = second and third nymphal stages; white bars = crawlers (first nymphal stage). Bars with the same letters do not differ significantly among treatments per developmental stage (means ± sem).
Percentage of mortality of different stages of Maconellicoccus hirsutus according to different concentrations of Heterorhabditis amazonensis; dark gray bars = females; light gray bars = second and third nymphal stages; white bars = crawlers (first nymphal stage). Bars with the same letters do not differ significantly among treatments per developmental stage (means ± sem).

Figure 2:

Percent invasion by Heterorhabditis amazonensis of different stages of Maconellicoccus hirsutus at different concentrations. Dark gray bars = females; light gray bars = second and third nymphal stages; white bars = crawlers (first nymphal stage). Bars with the same letters do not differ significantly among treatments per developmental stage (means ± sem).
Percent invasion by Heterorhabditis amazonensis of different stages of Maconellicoccus hirsutus at different concentrations. Dark gray bars = females; light gray bars = second and third nymphal stages; white bars = crawlers (first nymphal stage). Bars with the same letters do not differ significantly among treatments per developmental stage (means ± sem).

Figure 3:

Probability of mortality of different stages of Maconellicoccus hirsutus according to the number of Heterorhabditis amazonensis (probit). A = females, B = second and third instars, C = crawlers. Black lines represent the mean of the probability. Gray lines represent confidence intervals (95%).
Probability of mortality of different stages of Maconellicoccus hirsutus according to the number of Heterorhabditis amazonensis (probit). A = females, B = second and third instars, C = crawlers. Black lines represent the mean of the probability. Gray lines represent confidence intervals (95%).

Median number of Heterorhabditis amazonensis capable to invade different developmental stages of Maconellicoccus hirsutus_

Maconellicoccus hirsutus
StageConcentration (IJs)Median (IJs)First quartileThird quartile
Females200.506
40659
604.5310
804.5319
10022 a822
2nd and 3rd stages20000
40028
60056
80103
1004511
Crawlers20000
40000
60000
80101
100101

Lethal concentrations of Heterorhabditis amazonensis to kill different stages of Maconellicoccus hirsutus_

StageLD50 LD75 LD90
Females35.264.5106.7
2nd and 3rd stages83.9127.6190.5
Crawlers142.7189.7257.2
DOI: https://doi.org/10.21307/jofnem-2020-077 | Journal eISSN: 2640-396X | Journal ISSN: 0022-300X
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Language: English
Page range: 1 - 7
Published on: Jul 21, 2020
Published by: Society of Nematologists, Inc.
In partnership with: Paradigm Publishing Services
Publication frequency: 1 issue per year
Keywords:
Biocontrol,
Entomopathogenic nematodes,
Pest control
Related subjects:
Life sciences,
Life sciences, other

© 2020 Yvan Fuenmayor, Edgar Portillo, Brynelly Bastidas, Mayamarú Guerra, Ernesto San-Blas, published by Society of Nematologists, Inc.
This work is licensed under the Creative Commons Attribution 4.0 License.

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